CN116940859A - Ultra-wideband integrated circuit (UWB IC) and method of calibrating UWB products employing UWB IC - Google Patents
Ultra-wideband integrated circuit (UWB IC) and method of calibrating UWB products employing UWB IC Download PDFInfo
- Publication number
- CN116940859A CN116940859A CN202280012212.4A CN202280012212A CN116940859A CN 116940859 A CN116940859 A CN 116940859A CN 202280012212 A CN202280012212 A CN 202280012212A CN 116940859 A CN116940859 A CN 116940859A
- Authority
- CN
- China
- Prior art keywords
- ultra
- wideband
- flight
- time
- integrated circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 31
- 230000004044 response Effects 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 9
- 230000001186 cumulative effect Effects 0.000 claims 3
- 230000008569 process Effects 0.000 description 6
- 230000001934 delay Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/0209—Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/003—Bistatic radar systems; Multistatic radar systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
- G01S13/762—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with special measures concerning the radiation pattern, e.g. S.L.S.
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/14—Determining absolute distances from a plurality of spaced points of known location
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
- G01S7/406—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder
- G01S7/4069—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder involving a RF signal injection
Abstract
An ultra-wideband integrated circuit (10) is disclosed having a transmitter (12), a receiver (14), and a non-volatile memory (16) configured to store a time of flight between the transmitter (12) and the receiver (14). Also included is a digital interface (18) configured to communicate with a processor (20) configured to calculate the time of flight. Further comprising a digital transceiver (22) configured to, in response to the loopback mode: causing the transmitter (12) to transmit a plurality of ultra wideband frames directly to the receiver (14); measuring a time of flight of each of the plurality of ultra-wideband frames received by the receiver (14); and generating a data set for calculating the time of flight associated with each measured time of flight; -sending the data set to the processor (20); -receiving from the processor (20) the time of flight calculated from the dataset; and storing the time of flight in the non-volatile memory (16).
Description
RELATED APPLICATIONS
The present application claims the benefit of U.S. patent application Ser. No. 17/182,517 filed 2/23 of 2021, the disclosure of which is incorporated herein by reference in its entirety.
Technical Field
The present disclosure relates to the field of wireless communications, and more particularly to time-of-flight calibration of ultra-wideband integrated circuits.
Background
Ultra wideband technology is expected to be widely used in real-time location systems and various applications where accurate wireless distance measurements are required. This is achieved by accurately estimating the time of flight between two or more ultra-wideband based devices, such as smartphones or cars and key fobs.
In order to achieve optimal accuracy, any delay unrelated to the actual time of flight estimate must be considered in calculating the time of flight. These delays include internal delays within the ultra-wideband integrated circuit and external delays introduced by external components such as printed circuit board traces, filters, and antennas. The external delays introduced by the external components are typically very consistent between printed circuit boards. The largest variation in internal delay is introduced solely by the ultra wideband integrated circuit. This variation in internal delay can be as high as + -1 nanosecond, which is equivalent to + -30 centimeters from one ultra-wideband integrated circuit to another. A typical spread of internal delays of about 5000 devices is shown in fig. 1.
To eliminate this variation, ultra wideband product manufacturers perform so-called antenna delay calibration as part of end-of-line testing of ultra wideband based products (e.g., smartphones). Such antenna delay calibration is time consuming and therefore expensive to perform. Accordingly, there is a need for an ultra-wideband integrated circuit and calibration method that provides for simple and inexpensive calibration of ultra-wideband based products that utilize ultra-wideband integrated circuits.
Disclosure of Invention
An ultra-wideband integrated circuit is disclosed having a transmitter, a receiver, and a non-volatile memory configured to store a time of flight between the transmitter and the receiver. An interface configured to communicate with a processor configured to calculate a time of flight is also included. Further comprising a digital transceiver configured to, in response to the loopback mode: causing a transmitter to transmit a plurality of ultra-wideband frames directly to a receiver; measuring a time of flight of each of a plurality of ultra-wideband frames received by a receiver; and generating a data set for calculating a time of flight associated with each measured time of flight; sending the data set to a processor; receiving from the processor a time of flight calculated from the dataset; and storing the time of flight in a non-volatile memory.
In another aspect, any of the foregoing aspects, and/or the various individual aspects and features as described herein, may be combined singly or together to obtain additional advantages. Any of the various features and elements disclosed herein may be combined with one or more other disclosed features and elements unless indicated to the contrary herein.
Those skilled in the art will recognize the scope of the present disclosure and appreciate additional aspects thereof upon reading the following detailed description of the preferred embodiments and the associated drawings.
Drawings
The accompanying drawings, which are incorporated in and form a part of this specification, illustrate several aspects of the present disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 is an internal delay spread diagram of an ultra-wideband integrated circuit employed in an ultra-wideband based product.
Fig. 2 is a block diagram of an ultra-wideband integrated circuit structured according to the present disclosure.
Fig. 3 is a flow chart for determining the time of flight of an ultra-wideband integrated circuit in a loopback mode, wherein a transmitter and a receiver of the ultra-wideband integrated circuit are coupled together.
Fig. 4 is a flow chart of an ultra-wideband calibration process for an ultra-wideband based product incorporating the ultra-wideband integrated circuit of fig. 2.
Detailed Description
The embodiments set forth below represent the information necessary to enable those skilled in the art to practice the embodiments and illustrate the best mode of practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of the disclosure and the accompanying claims.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood that when an element such as a layer, region or substrate is referred to as being "on" or "extending" another element, it can be directly on or extend directly onto the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly extending onto" another element, there are no intervening elements present. Also, it will be understood that when an element such as a layer, region or substrate is referred to as being "over" or "extending over" another element, it can extend directly over the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or extending "directly over" another element, there are no intervening elements present. It will also be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.
Relative terms, such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" may be used herein to describe one element, layer or region's relationship to another element, layer or region as illustrated. It will be understood that these terms and those discussed above are intended to encompass different orientations of the device in addition to the orientation depicted in the figures.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Embodiments are described herein with reference to schematic illustrations of embodiments of the disclosure. As such, the actual dimensions of the layers and elements may vary, and are expected to vary from the illustrated shapes due to, for example, manufacturing techniques and/or tolerances. For example, a region illustrated or described as square or rectangular may have rounded or curved features, and a region shown as a straight line may have some irregularities. Thus, the regions illustrated in the figures are schematic and their shapes are not intended to illustrate the precise shape of a region of a device and are not intended to limit the scope of the present disclosure. In addition, the size of structures or regions may be exaggerated relative to other structures or regions for illustrative purposes and, thus, structures or regions are provided to illustrate the general structures of the present application and may or may not be drawn to scale. Common elements between the drawings may be shown with common element numbers herein and will not be described later.
Fig. 2 is a block diagram of an ultra-wideband integrated circuit 10 having a transmitter 12, a receiver 14, and a non-volatile memory 16 configured to store a time of flight between the transmitter 12 and the receiver 14. The transmitter 12 typically up-converts the baseband ultra-wideband pulses to a carrier generated by a frequency synthesizer, wherein the carrier is centered on a desired one of several ultra-wideband channels. In the transmit mode, the carrier is modulated and amplified prior to transmission from an external antenna (not shown). The receiver 14 typically includes an RF front end that amplifies the received ultra-wideband frame by means of a low noise amplifier before directly down-converting the ultra-wideband frame to baseband.
The digital interface 18 is configured to transfer data between the non-volatile memory 16 and the processor 20. The processor 20 is configured to receive the data sets communicated from the digital interface 18 and calculate a time of flight. The processor 20 depicted in dashed lines may be an external host processor or integrated into the ultra-wideband integrated circuit 10.
Further included in the ultra-wideband integrated circuit 10 is a digital transceiver 22 that is configured to cause the transmitter 12 to transmit a plurality of ultra-wideband frames directly to the receiver 14 in response to a loopback mode. In the exemplary embodiment of fig. 2, the switching network 24, which is typically used to alternately and selectively couple the transmitter 12 and receiver 14 to the antenna port 26, is re-used to directly couple the transmitter 12 to the receiver in the loop-back mode. For example, during a transmit mode, transmit switch S1 coupled between transmitter 12 and antenna port 26 is closed by digital transceiver 22, and receive switch S2 is opened by digital transceiver 22. Conversely, during the receive mode, transmit switch S1 is turned on by the digital transceiver 22 and receive switch S2 is turned off by the digital transceiver. During the loopback mode, however, both transmit switch S1 and receive switch S2 are turned off by the digital transceiver to create a direct path between the output terminal 28 of the transmitter 12 and the input terminal 30 of the receiver 14.
In this regard, the digital transceiver 22 is further configured to measure a time of flight of each of the plurality of ultra-wideband frames received by the receiver 14 and generate a data set for calculating a time of flight associated with each measured time of flight. The digital transceiver 22 is also configured to send the data set to the processor 20, receive the time of flight calculated from the data set from the processor 20, and store the time of flight in the non-volatile memory 16.
During a transmit operation of the digital transceiver 22, a transmit burst is generated by applying digitally encoded transmit data to an analog pulse generator. The burst is up-converted by the transmitter block. During a receive operation, the ultra-wideband signal is down-converted by the receiver block. Typically, the ultra-wideband signal is demodulated and the resulting received ultra-wideband data is available to a host processor, which may be processor 20. The digital transceiver also uses the down-converted baseband signal to measure the time of flight of the incoming ultra-wideband frame.
The exemplary embodiment of the ultra-wideband integrated circuit of fig. 2 further includes a clock generator 28 configured to receive a reference frequency used by the integrated phase-locked loop frequency synthesizer to generate a frequency that runs an internal system clock and to generate RF carrier signals for up/down frequency conversion by the transmitter 12 and receiver 14. For example, clock generator 28 generates a Receiver (RX) clock signal used by receiver 14, a Transmit (TX) clock signal used by transmitter 12, and a reference clock signal used by digital transceiver 22.
A state controller 32 is coupled between the digital interface 18 and the digital transceiver 22. The state controller 32 is configured to coordinate actions taken by the digital transceiver 22 by means of control signals. For example, the state controller 32 ensures that when the ultra-wideband integrated circuit 10 is operating in a transmit mode, the digital transceiver 22 turns off the transmit switch S1 and turns on the receive switch S2. Conversely, the state controller 32 also ensures that the digital transceiver 22 turns on the transmit switch S1 and turns off the receive switch S2 when the ultra-wideband transceiver 10 is operating in the receive mode, and ensures that the digital transceiver turns off both the transmit switch S1 and the receive switch S2 when the ultra-wideband integrated circuit is operating in the loopback mode. The state controller 32 may be a digital logic state machine implemented in a field programmable array or physical logic gates.
The power management circuitry 34 provides and manages power for the ultra-wideband integrated circuit 10. The power management circuitry 34 typically includes a voltage converter and a regulator.
Fig. 3 is a flow chart for determining the time of flight of the ultra-wideband integrated circuit 10 in a loopback mode, wherein the transmitter 12 and receiver 14 of the ultra-wideband integrated circuit 10 are coupled together. The process begins by configuring the ultra-wideband integrated circuit 10 for a channel of interest (step 300). Next, both the transmit switch S1 and the receiver switch S2 are turned off by the digital transceiver 22 to effect a loop back between the transmitter 12 and the receiver 14 (step 302). The variable is set to count down the N time-of-flight measurements (step 304). It should be appreciated that step 302 and step 304 may be interchanged. Next, the transmitter 12 transmits the ultra-wideband frame (step 306) and the receiver 14 receives the ultra-wideband frame (step 308). Next, the digital transceiver 22 determines a time of flight between transmission and reception of the ultra-wideband frame (step 310). The determined time of flight is accumulated in the time of flight dataset (step 312).
A determination is made as to N time-of-flight measurements that have been completed (step 314). If N time-of-flight measurements have not been completed, the time-of-flight measurements continue. Conversely, if N time-of-flight measurements have been completed, processor 20 (FIG. 1) calculates a time-of-flight from the time-of-flight dataset (step 316). In some embodiments, the processor 20 is a host computer external to the ultra-wideband integrated circuit 10 (FIG. 1). In other embodiments, the processor is integrated within the ultra-wideband integrated circuit 10.
The digital value corresponding to the time of flight of the channel of interest is stored in non-volatile memory 16 (step 318). A determination is then made as to whether all channels have been calibrated with time-of-flight stored in non-volatile memory 16 (step 320). If so, the process ends, otherwise the process resumes with configuring the ultra-wideband integrated circuit for the next channel of interest (step 300).
Fig. 4 is a flow chart of an ultra-wideband calibration process for an ultra-wideband based product incorporating the ultra-wideband integrated circuit 10 depicted in fig. 2. This method according to the present disclosure eliminates antenna delay calibration that is typically required at back-end calibration of an ultra-wideband based product incorporating ultra-wideband integrated circuit 10. The method begins by establishing communication between a host computer and an ultra-wideband based product to be calibrated (step 400). Next, a value corresponding to the time of flight of the channel to be calibrated is recalled from the non-volatile memory 16 of the ultra-wideband integrated circuit 10 within the ultra-wideband based product (step 402). Next, the host computer adds a value corresponding to the time of flight of the channel to be calibrated to a predetermined delay value associated with the ultra-wideband based product (step 404). The host computer then stores the predetermined delay value of the channel in the one-time programmable memory of the ultra-wideband based product (step 406). Next, the host computer determines whether all channels have been calibrated with the one-time-of-flight stored in the one-time programmable method (step 408). If so, the process ends, otherwise the host computer recalls a value from the non-volatile memory 16 of the ultra-wideband integrated circuit 10 that corresponds to the time-of-flight of the next channel to be calibrated (step 402).
It is contemplated that any of the foregoing aspects may be combined and/or various individual aspects and features described herein to achieve additional advantages. Any of the various embodiments disclosed herein can be combined with one or more other disclosed embodiments, unless indicated to the contrary herein.
Those skilled in the art will recognize improvements and modifications to the preferred embodiments of the present disclosure. All such improvements and modifications are considered within the scope of the concepts disclosed herein and the claims that follow.
Claims (18)
1. An ultra-wideband integrated circuit (10), comprising:
● A transmitter (12);
● A receiver (14);
● -a non-volatile memory (16) configured to store a time of flight between the transmitter (12) and receiver (14) corresponding to a loopback delay;
● A digital interface (18) configured to communicate with a processor (20) configured to calculate the time of flight; and
● A digital transceiver (22) configured to, in response to a loop-back mode:
● Causing the transmitter (12) to transmit a plurality of ultra wideband frames directly to the receiver (14);
● Determining a time of flight for each of the plurality of ultra-wideband frames received by the receiver (14);
● Generating a data set for calculating a time-of-flight value associated with each determined time-of-flight;
● -sending the data set to the processor (20);
● -receiving from the processor (20) the time-of-flight value calculated from the dataset; and
● -storing the time of flight value in the non-volatile memory (16).
2. The ultra-wideband integrated circuit (10) of claim 1, wherein the data set is a plurality of time-of-flight measurements generated by a cumulative of each time-of-flight determined for each of the plurality of ultra-wideband frames received by the receiver (14).
3. The ultra-wideband integrated circuit (10) of claim 1, wherein the dataset is a sum of each determined time of flight and a value representing a number of determined times of flight.
4. The ultra-wideband integrated circuit (10) of claim 1, wherein the processor (20) is external to the ultra-wideband integrated circuit (10).
5. The ultra-wideband integrated circuit (10) of claim 1, wherein the processor (20) is integrated within the ultra-wideband integrated circuit (10).
6. A method of calibrating an ultra-wideband integrated circuit (10) having a transmitter (12), a receiver (14), and at least one switch (S1, S2) configured to selectively couple the transmitter (12) to the receiver (14) in a loopback mode, a non-volatile memory (16) configured to store a time of flight between the transmitter (12) and receiver (14) corresponding to a loopback delay, and a digital transceiver (22) configured to perform a method in response to the loopback mode, the method comprising:
● Causing the transmitter (12) to transmit a plurality of ultra wideband frames directly to the receiver (14);
● Determining a time of flight for each of the plurality of ultra-wideband frames received by the receiver (14);
● Generating a data set for calculating a time-of-flight value associated with each determined time-of-flight;
● -sending the data set to a processor (20);
● -receiving from the processor (20) the time-of-flight value calculated from the dataset; and
● -storing the time of flight value in the non-volatile memory (16).
7. The method of calibrating the ultra-wideband integrated circuit (10) of claim 6, wherein the data set is a plurality of time-of-flight measurements generated by a cumulative for each time-of-flight determined for each of the plurality of ultra-wideband frames received by the receiver (14).
8. The method of calibrating the ultra-wideband integrated circuit (10) of claim 6, wherein the dataset is a sum of each time of flight determined and a value representing a number of times of flight determined.
9. The method of calibrating the ultra-wideband integrated circuit (10) of claim 6, wherein the processor (20) is external to the ultra-wideband integrated circuit (10).
10. The method of calibrating the ultra-wideband integrated circuit (10) of claim 6, wherein the processor (20) is integrated within the ultra-wideband integrated circuit (10).
11. A method of calibrating an ultra-wideband based product comprising an ultra-wideband integrated circuit (10) having a transmitter (12), a receiver (14), and a non-volatile memory (16) configured to store a time-of-flight value between the transmitter (12) and receiver (14) corresponding to a loopback delay, the method comprising:
● Invoking the time-of-flight value from the non-volatile memory by means of a host computer;
● Adding, by the host computer, the time-of-flight value to a predetermined delay value associated with the ultra-wideband based product to generate a delay calibration value; and
● The delay calibration value is stored in a memory of the ultra-wideband based product.
12. A method of calibrating the ultra-wideband based product according to claim 11, wherein the memory of the ultra-wideband based product is a one-time programmable memory.
13. The method of calibrating the ultra-wideband based product of claim 11, wherein the ultra-wideband integrated circuit includes a digital interface configured to communicate with the host computer.
14. The method of calibrating the ultra-wideband based product of claim 13, wherein the ultra-wideband integrated circuit (10) further comprises a digital transceiver (22) configured to perform a method in response to a loopback mode, the method comprising:
● Causing the transmitter (12) to transmit a plurality of ultra wideband frames directly to the receiver (14);
● Determining a time of flight for each of the plurality of ultra-wideband frames received by the receiver (14);
● Generating a data set for calculating a time-of-flight value associated with each determined time-of-flight;
● -sending the data set to a processor (20);
● -receiving from the processor (20) the time-of-flight value calculated from the dataset; and
● -storing the time of flight value in the non-volatile memory (16).
15. The method of calibrating the ultra-wideband based product of claim 14, wherein the data set is a plurality of time-of-flight measurements generated by a cumulative of each time-of-flight determined for each of the plurality of ultra-wideband frames received by the receiver (14).
16. The method of calibrating the ultra-wideband based product of claim 14, wherein the dataset is a sum of each time of flight determined and a numerical value representing a number of times of flight determined.
17. The method of calibrating the ultra-wideband based product of claim 14, wherein the processor (20) is external to the ultra-wideband integrated circuit (10).
18. The method of calibrating the ultra-wideband based product of claim 14, wherein the processor (20) is integrated within the ultra-wideband integrated circuit (10).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/182,517 | 2021-02-23 | ||
| US17/182,517 US20220268910A1 (en) | 2021-02-23 | 2021-02-23 | Ultra-wideband integrated circuit (uwb ic) and method of calibrating a uwb product that employs the uwb ic |
| PCT/US2022/016893 WO2022182576A1 (en) | 2021-02-23 | 2022-02-18 | Ultra-wideband integrated circuit (uwb ic) and method of calibrating a uwb product that employs the uwb ic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116940859A true CN116940859A (en) | 2023-10-24 |
Family
ID=80999680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280012212.4A Pending CN116940859A (en) | 2021-02-23 | 2022-02-18 | Ultra-wideband integrated circuit (UWB IC) and method of calibrating UWB products employing UWB IC |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220268910A1 (en) |
| EP (1) | EP4298458A1 (en) |
| KR (1) | KR20230142571A (en) |
| CN (1) | CN116940859A (en) |
| WO (1) | WO2022182576A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100593990B1 (en) * | 2003-12-23 | 2006-06-30 | 삼성전자주식회사 | Uwb transceiver for removing inessential carrier component in transmission signal spectrum |
| US7561048B2 (en) * | 2005-12-15 | 2009-07-14 | Invisitrack, Inc. | Methods and system for reduced attenuation in tracking objects using RF technology |
| US20110205121A1 (en) * | 2005-12-28 | 2011-08-25 | Camero-Tech Ltd. | Method of determining real time location of reflecting objects and system thereof |
| US10863313B2 (en) * | 2014-08-01 | 2020-12-08 | Polte Corporation | Network architecture and methods for location services |
| RU2578298C1 (en) * | 2014-11-24 | 2016-03-27 | Самсунг Электроникс Ко., Лтд. | Ultra-bandwidth device for determining profile of living organism tissue layers and corresponding method |
| US9634861B2 (en) * | 2015-07-14 | 2017-04-25 | Silicon Laboratories Inc. | Calibration of transceiver |
| US10389561B2 (en) * | 2017-07-28 | 2019-08-20 | Texas Instruments Incorporated | Transmitter time-domain estimation and compensation of IQ imbalance |
| US11385327B2 (en) * | 2018-10-10 | 2022-07-12 | Sri International | CubeSat radar systems |
-
2021
- 2021-02-23 US US17/182,517 patent/US20220268910A1/en active Pending
-
2022
- 2022-02-18 KR KR1020237030045A patent/KR20230142571A/en active Search and Examination
- 2022-02-18 CN CN202280012212.4A patent/CN116940859A/en active Pending
- 2022-02-18 EP EP22714026.6A patent/EP4298458A1/en active Pending
- 2022-02-18 WO PCT/US2022/016893 patent/WO2022182576A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| US20220268910A1 (en) | 2022-08-25 |
| WO2022182576A1 (en) | 2022-09-01 |
| KR20230142571A (en) | 2023-10-11 |
| EP4298458A1 (en) | 2024-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080090588A1 (en) | Positioning system | |
| CN106899359B (en) | WIFI module radio frequency calibration method | |
| US9077375B2 (en) | DTC system with high resolution phase alignment | |
| US20080042872A1 (en) | On-Chip Receiver Sensitivity Test Mechanism | |
| CN104897242A (en) | Low power radar level gauge system | |
| CN107504994B (en) | Calibration method, device, mobile terminal and the readable storage medium storing program for executing of proximity sensor | |
| CN104897241A (en) | Low power radar level gauge system with integrated microwave circuit | |
| EP3570202A2 (en) | Phase compensation in an nfc system | |
| US10778144B2 (en) | Methods for correcting oscillator offsets in ultra-wideband (UWB) networks | |
| WO2013092867A1 (en) | Dtc-systems with high resolution phase alignment | |
| CN101282143B (en) | Apparatus and method for measuring radio frequency emitter power | |
| CN116940859A (en) | Ultra-wideband integrated circuit (UWB IC) and method of calibrating UWB products employing UWB IC | |
| US9531428B2 (en) | Wireless communication calibration system and associated method | |
| CN106911408A (en) | A kind of calibration method for calibrating repeater-transmitter group delay | |
| CN112698113A (en) | Amplitude calibration method and device of receiving channel and network equipment | |
| US7532039B2 (en) | Clock signal detector | |
| JP2010258503A (en) | Tdd type wireless communication device | |
| US8665935B2 (en) | Method and system for calibrating a transmitting system | |
| CN112751630A (en) | Signal processing method and related device | |
| CN108768555B (en) | Digital control type adjustable microwave delayer and delay test method thereof | |
| CN111130589B (en) | Electronic equipment and power calibration method | |
| US11875875B2 (en) | Variable tick for DRAM interface calibration | |
| KR101324601B1 (en) | Apparatus and method for measuring delay time of processing in a wireless communication system for calculating location | |
| US20220229171A1 (en) | System and method for microwave imaging | |
| CN114598350A (en) | Transceiver circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |